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Dia 203mm Thread 4 1/2'' Tungsten Carbide Drill Bits

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Dia 203mm Thread 4 1/2'' Tungsten Carbide Drill Bits

Dia 203mm Thread 4 1/2'' Tungsten Carbide Drill Bits
Dia 203mm Thread 4 1/2'' Tungsten Carbide Drill Bits Dia 203mm Thread 4 1/2'' Tungsten Carbide Drill Bits Dia 203mm Thread 4 1/2'' Tungsten Carbide Drill Bits

Large Image :  Dia 203mm Thread 4 1/2'' Tungsten Carbide Drill Bits

Product Details:
Place of Origin: China
Brand Name: SOLLROC
Certification: SGS
Model Number: SD8
Payment & Shipping Terms:
Minimum Order Quantity: 1 piece
Price: negotiable
Packaging Details: Cartons + ply wood case (no plastic)
Delivery Time: 18 working days
Payment Terms: T/T,
Supply Ability: 10000 pieces/month

Dia 203mm Thread 4 1/2'' Tungsten Carbide Drill Bits

Description
Application: Quarrying, Construction, Civil Engineering, Mining, Usage: Mining, Water Well Drilling, Geothermal Drilling
Product Name: SD8 DTH Bit Rock Formation: Granite, Limestone, Quartz, Etc
Shank: SD8 Advantage: Hign Abrasion Resistance
Color: Black Or As Request Size: 8''
Bit Diameter: 203mm Rock Hardness: Granite, Limestone, Quartz, Etc
Machine Type: Drilling Tool,Drilling Equipment,Downhole Tools,Mining Machine Parts Use: Well Drilling,Ore Mining,Coal Mining,Coal/Ore Mining,quarry
High Light:

Thread 4 1/2'' Tungsten Carbide Drill Bits

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Dia 203mm Tungsten Carbide Drill Bits

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concave face carbide rock drill bits

Thread 4 1/2'' API REG Tungsten Carbide Button SD8 8''-203mm DTH Bit For Water Well Drilling

 

 

Product description

Drill bit life and cost is the prime consideration on a drill site, rotation speeds should becarefully monitored.DTH drill bits are rotary - Percussive tools with the emphasis on Percussive . Theirfunction is to fracture the material being drilled which should then be immediately carriedaway by the exhaust air. Button bits have no cutting or tearing action as such and the effect ofrapid rotation can be prejudicial rather than beneficial to the life of the bit, especially in abrasiverock which wears away fast moving peripheral inserts or in solid dense material which causesthe peripheral inserts to overheat and spall due to friction.If the string is rotated too slowly, this will cause the buttons to impact previously chipped areasof the hole with a resultant drop in penetration speed.As a general guide - the harder the rock or the larger the bit diameter -the slower therotation speed required.It may be necessary however to increase the rotation speed where the rock is badly fissured inorder to prevent stalling.It should be remembered however that stalling in the bore hole could be the result of a verybadly worn bit and increasing the rotation speed in these circumstances will only accelerate the problem.

 

SD8 203mm 8'' DTH Drill Bit overview

Bit Diameter    203mm 8''
No.* Button Dia. mm     Gauge Buttons    10*18mm
    Front Buttons      8*18mm + 5*16mm
Weight (kg)     40.1

 

SD8 series DTH bit overview

Diameter Button Configure Dia*qty. Bit design

Weight

(kg)

Metric Inch Guage button Front button
203mm 8'' 18mm*10 18mm*8+16mm*5 Concave face 40.1
216mm 8 1/2'' 18mm*10 18mm*8+16mm*6 Concave face 44.3
219mm 8 5/8'' 18mm*10 18mm*8+16mm*6 Concave face 44.8
229mm 9'' 18mm*12 16mm*12+16mm*7 Concave face 46.4
235mm

9 1/4''

18mm*12 16mm*12+16mm*7 Concave face 47.4
245mm  9 5/8'' 19mm*12 16mm*12+16mm*8 Concave face     51.5


Product Advantages

1. 1. Long life span: the wear-resist of tungsten carbides is 10-20 times higher compared with other similar materials,             which greatly extends the life of the carbide bits;

2. High drilling efficiency: the high grade hardness of the carbides can always stay sharp, which could increase the drilling speeds too;
3.High abrasion resistant cemented carbide.
4.Advanced heat treatment technics.
5.Professional vacuum sintering technique.

 

Face shape Features

Concave Face

1. Capable of drilling straighter holes in medium to hard rock which is broken or less consolidated

2. Offers high penetration rate in the above stated rock conditions

3. Has excellent air flushing characteristics

4. Predominant face style for majority of drilling conditions

Flat Face

1. Have a superior performance in hard, abrasive and broken rock conditions

2. They however have a slower penetration rate in comparison to a concave face bit

Convex Face

1. This face has been designed to offer high penetration rate in soft rock such as shale, limestone etc

2. They are recognized for having excellent capability for drilling into moderately consolidated rock conditions

 

Structure picture

Dia 203mm Thread 4 1/2'' Tungsten Carbide Drill Bits 0

 

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Dia 203mm Thread 4 1/2'' Tungsten Carbide Drill Bits 2

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Product application

At present, DTH drilling tool is widely used in underground mining, quarries, hydraulic and Hydro-Power Engineering, water well drilling, Mineral exploration, anchoring hole drilling, geothermal engineering, Subway excavation, another civil engineering.

DTH is one of the most efficient ways of drilling rock, using a rapid hammer action to break the rock into sizeable chips which are then evacuated from the bore hole by the air exhausted from the DTH Hammer. The technique provides fast drilling of accurately aligned, straight and clean holes in most ground conditions.

Dia 203mm Thread 4 1/2'' Tungsten Carbide Drill Bits 4
 

Company informaiton

1. Our factory has been specialized in manufacturing drilling tools and spare parts for over 10 years.

2. We have advanced technology and equipment.

3. Our technician has more than 13 year's professional working experience.

Contact Details
Changsha Sollroc Engineering Equipments Co., Ltd

Contact Person: Serena Gong

Tel: +8613055195409

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